2021

4.0

2003

7.8

2002

7.1

2001

6.2

1990

7.8

2004

7.3

2002

8.4

1996

8.0

1989

7.4

1997

7.7

1994

6.3

1980

6.6

1982

6.4

1988

7.5

2001

6.8

1989

8.3

2001

5.4

1955

7.5

1983

7.2

1979

7.0